Working Party on Computational Mechanics of the International Union for Theoretical and Applied Mechanics (IUTAM) (1996-2002)

Advisory Board of the International Association for Shell and Spatial Structures (IASS) (since 1999)

Member of the International Advisory Board of the Centre of Excellence on Advanced Materials and Structures at the Institute of Fundamental Research of the Polish Academy of Sciences (since 2000)

ECCOMAS Ph.D.-Award Committee (2003)

Member of the International Advisory Board of the Glasgow Research Partnership in Engineering (2007-2013)

Member of the International Advisory Board of the Cluster of Excellence in Simulation Technology at the University of Stuttgart (since 2008)

Member of the Corporation Visiting Committee for the Department of Civil and Environmental Engineering of MIT (since 2008)

Member of the Peer-reviewer Panel for the Georgian National Science Foundation (since 2008)

Member (former member) of committees of Vienna University of Technology, the Austrian Academy of Sciences and the Austrian National Science FoundationMember of the Panel PE08 of the European Research Council (seit 2008)

Member of the International Advisory Board of the National Telford Institute (since 2008)

Member of the International Scientific Advisory Board (ISAB) of the COMET K2 Zentrum for Integrated Research in Materials Processing and Product Engineering, Materials Center Leoben (since 2013)

Member of the Advisory Scientific Council of the International Center for Numerical Methods in Engineering (CIMNE) (since 2017)

Participation in External Evaluations

Evaluation of the Institute for Solid Mechanics of the Academy of Sciences of the Czech Republic (1996)

Evaluation of the Research Group „Modelling of Cohesive Fracture Materials as a Continuum or a Discontinuum” at the University of Stuttgart (1998, 2001)

Evaluation of Research at the Dutch Universities in the area of Civil Engineering (2001)

Evaluation of Research at the British Universities in the area of Civil Engineering (2001)

Evaluation of the Research Group „Multiscale Methods in Computational Mechanics” at the University of Stuttgart, Delft University of Technology and Eindhoven University of Technology (2003), (2006)

Evaluation of Applications to the German Research Foundation for Establishment of Graduate Schools and Clusters of Excellence in the Area of „Production Engineering and Modeling / Simulation” (2005), (2006)

Evaluation of Applications to the Technology Foundation (STW) of the Netherlands in the Framework of the STW Program "Multiscale Simulation Techniques" (2007)

Evaluation of the Institute for Thermomechanics of the Academy of Sciences of the Czech Republic (2010)

Evaluation of the Civil Engineering Discipline at Tongji University Shanghai (2011)

FEM-Class of 42 Meeting (International Colloquium in Honor of Seven Scientists in the Area of Computational Mechanics)

2012:

Honorary Chairman of the 6th European Congress on Computational Methods in Applied Sciences and Engineering

2013:

Special Issue of Engineering Structures in honor of H. Mang on the occasion of his 70th birthday

2014:

Honor Decree of the National Academy of Sciences of Belarus for Merits for the Development of Scientific Relations between the Republic of Belarus and Austria and for a Fruitful Cooperation with the National Academy of Belarus

2015:

Honorary Chairman of CONCREEP-10 (Mechanics and Physics of Creep, Shrinkage and Durability of Concrete and Concrete Structures)

2015:

Honorary Chairman of the 2nd International Conference on Multi-scale Computational Methods for Solids and Fluids

2015:

Permanent Member of the Global Advisory Board of the Global Academy of Engineering